Not traffic that is being sent via other protocols or on different ports. One way of doing this would be setting up a computer to pass its internet connection via NAT firewall rules to the apple device and behave like an access point. From there you could dump the raw traffic to/from the apple device. Regarding encrypted content, it’s probable that the telemetry and other info being sent is signed with a key that is not available in user space so you wouldn’t be able to add a key to view it. However you would definitey be able to see it being sent and the packet size/frequency ect